Dead CRT disposal?
 

Environmental concerns aside, what's the safest way to de evacuate a couple old CRT's so that they can be disposed of? I think I remember reading someplace that you can take a center punch to the keyway of the neck connector, which would break the evacuation stem? I'd really prefer it doesn't implode.

I have never had one implode by knocking off the tip seal...I usually use just a small hammer to crack the tip. Driving a sharp scribe through the HV button works well also.
If you wrap in an old heavy blanket, it will provide a measure of protection and also contain most pieces for easy disposal should the tube implode.

jr

I've always just hit the neck with a hammer. Usually I leave the tube in its cabinet if possible, but if I can't, it's still safe at close range. Never had a tube implode yet. If you watch Youtube, there's a video of a guy pouring liquid nitrogen down a pipe that ends just above the face of an upwards facing tube... I was amazed how quickly it imploded!

Cracking the evacuation tip is my usual method for "modern" era tubes (those that have some form of integral implosion protection). Have used the anode button method a ew times, as well.

An older tube without any tension band or bonded faceplate can really be a bomb if it suddenly lets go, and I wouldn't want to be right next to it if it did. I would suggest putting the tube inside a plastic trash bag, then a HEAVY cardboard box. Seal the box, and then pop the envelope with a thin metal rod piercing the side of the box.

A pellet gun or slingshot from a decent (40-50') distance makes a nice science demonstration, if you have a safe place to do it (and the ability to cleanup the glass afterwards). :D

My vote for the scribe through the anode procedure.

A well-aimed 30.06 slug makes a nice science experiment and marksmanship demonstration...

Put it in a plastic trash bag (If you're British, that's a black bin liner), stand back eight feet and throw a rock at it.

I was WAITING for somebody to come up w/the most FUN way of dispatching a dead CRT...MY Uzi on full-auto works DANDILY, too...But everybody thinks I'm a "Froth-At-The-Mouth" Gun-Nut type, so I can't talk about it...(grin)

Just ask the people that bumped the neck when they carried it through the door and weren't watching. Hissss! :sigh:

I just can't help but think of Arnie's line in Terminator 2.... "Uzi 9 millimeter" You have to put on his accent when you say that! :)

As to knocking the neck off a CRT I was carrying, I luckily haven't had that happen, but I did break a CRT glass seal when fitting a yoke. The plastic cover had rotted away exposing the seal. It took ages before the hissing stopped, and when powering it up, there was a lot of internal arcing. Of course, I was 12 at the time!

I've used the anode button on the last 4 or 5 I've done; it doesn't take much of a tap with a hammer to poke a hole right there. I'd still suggest a heavy blanket over it, just in case. Nice thing is you end up with absolutely no broken glass (assuming it works right).

Beretta 92FS. At 50 feet I can take off the neck for you, if you like...:smoke:

Better make it SHARP, and fine-gauge, or the force of driving the punch or scribe into the metal anode, will implode the tube by breaking the side wall.

Charles

How about a sharp drill bit to the anode on a cordless drill? :D

SR

I have read about the drill method before. I suppose the idea is to stop when you hear a slow Hsss. I would still wrap the victim in a quilt and wear protective gear, just in case. One sharp piece of glass to the jugular can really spoil your day.

Phil Nelson